利津地区沙四段沉积相及其演化特征研究

Research on Sedimentary Facies and Its Evolution Characteristics of the Fourth Member of the Shahejie Formation in Lijin Area

济阳坳陷东营凹陷的利津洼陷内广泛发育大量砂砾岩体,是油气储集的优良场所。对研究区地震体进行剖面截取,在地震剖面上进行不同地震相的划分,最终获得平面地震相展布图。综合运用已经获得的岩性资料,测井资料,录井资料,对获得的平面地震相进行转化。东营凹陷利津地区在沙四段主要发育有近岸水下扇、半深湖-深湖、滑塌浊积岩等多种沉积相类型。并对沉积相纵横向的变化进行研究,总结研究区沉积相演化规律。

Numerous glutenite bodies are widely developed in Lijin sag of Dongying sag,Jiyang sag,which is an excellent place for oil and gas storage.The seismic sections of the research area are intercepted,and different seismic facies are divided on the seismic section.Finally,the distribution diagram of plane seismic facies is obtained.The lithology information and logging data are used comprehensively to transform the obtained plane seismic facies.Lijin area in Dongying sag mainly develops nearshore subaqueous fan facies,semi-deep lake-deep lake facies,fluxoturbidite and other sedimentary facies in the Fourth Member of the Shahejie Formation.The vertical and horizontal changes of sedimentary facies were studied,and the evolution rule of sedimentary facies in the research area was summarized.